Cutting machine



' March '13, 1928.

1,662,387 w. MAIER CUTTING MACHINE Filed Feb. 12, 1923 2. Sheets-$heet l Patented Mar. 13, 1928.

WILLIAM MAIER, OF ST. LOUIS, MISSOURI.

CUTTING MACHINE.

Application filed February 12, 1923.

This invention relates to cutting machines adapted to cut 011' lengths of material from stock fed thereto, and pertains more particularly to certain improvements in that form of machine disclosed in my United States Patent Number 1,318,892 issued October 14,

The object of my present improvements is to provide means whereby the starting and Stopping of the cutting rolls will be rendered less abrupt and the speed of said rolls will be increased or decreased gradually, the speed being fastest when the knives are cutting, and slower the rest of the time. An-

]6 other object is to accomplish this without sacrificing desirable features of the opera tion, such as accurate timing.

In the accompanying drawings forming part of this specification, in which like numbers of reference denote like parts whereever they occur, 7

Figure l'is a side elevation of the machine;

Figure 2 is a vertical section taken on the line 2-2 of Figure 1;

Figure 3 is an enlarged fr-agmental detail view, partly in section, of the clutch mechaniism, taken on the line 3-3 of Figure 1, an

Figure 4 is a fragmental vertical central 80 section of the clutch mechanism, on the same scale as that of Figure 3.

The base 10 and the uprights or standards 11, 12, and 13 constitute the framework of the machine. The standards 11 and 12 are provided with bearings 14 and 15 respectively, and standard 13, also, has a hearing, not shown, wherein revolves drive-shaft 17 having tight and loose pulleys 1S and 19 respectively, collars 20 and 21, and spur pinion 22, which is keyed in fixed relation thereto. Spur pinion 22 meshes with and drives spur gear 23, which is loosely mounted on shaft 24 journaled in bearings 25, 26, and

27 in standards 11, 12, and 13.

A ring 28 is fastened by screws 29 to gear 23. Rollers 30, located in the notches 31 and between legs 32 in the cage 33. are adapted to roll on the inclined edges 34-of the notches 35 in disk 36, which disk 36 is 50 located within an opening through rollercage 33, adapted to hold the rollers 30 in notches 31. A tension spring 38 is attached by spring-post 39 to the cage 33, and by spring-post 40 to the clutch disk 41. Clutch i5 disk 41 is fixed by a key 42 to sleeve 43, which runs loose unattached to shaft 24.

Serial No. 618,600.

Notched disk 36 is, also, internally threaded to fit the external thread 44 of sleeve 43. An eccentric gear 45 is sweated on the sleeve 43 at 46. A lever 47 pivoted at. 48 normally has its end 45) in engagement with shoulder of roller-cage A train of gears operated by a feeding machine (not shown) regulates the frequency of disengagement of the end 49 of lever 48 from shoulder 50 of cage 33. Such disengagement releases cage 33, causing it to revolve under the tension of spring 38 in such direction that therollers 30 travel each one up its adjacent incline 34 on the peripheral edge of disk 36 with the re sult that each roller is thus forced into con-v tact with the inner periphery of ring 28, thereby producing a wedging effect that causes disk 36, ring 28,.and roller-cage 33 to travel as one, thereby rotating notched disk 36. On account of sleeve 43 and disk 36 being threadedleft-handed, said disk 36 is screwed towards disk 41 until face 51 of disk 36 contacts with face 52 of disk 41. This causes disk 41 and consequently sleeve 43 and eccentric gear 45 to rotate. When rollcr-cage 33 has made one revolution, it is brought to rest by the engagement of shoulder 50 with the end 49 of lever 47 held against cage 33 by a spring not shown. The consequent relative movement between notched disk 36 and rollers 30 through the intervention of roller-cage 33 results in the rollers 30 moving down their respective inclines 34 against the upturned ends 65 of inclines 34 of notched disk 36, whereby said disk 36 is screwed away from disk 41, there-- by releasing the clutch through the disen gagement of faces 51 and 52 of disks 36 and 41 respectively.

Eccentric gear 45 engages eccentric gear keyed to shaft 54 journaled in bearings and 56 secured to standard 11 and 12 respectively. Spur gear 57 keyed to shaft 54 meshes with spur gear 58 keyed to shaft 24, said gear 58 in turn meshing with spur gear 59 keyed to shaft 60 journaled in bearings 61 and 62 secured to standards 11 and 12 respectively. ,Rolls 63 and 64 are keyed to shafts 24 and 60 respectively.

The position of the eccentric gears 45 and 53 on their respective shafts is such that shaft 54. gears 57, 53. and 59. shafts 24 and 60. and the rolls 63 and 64 carrying the knives 65 and 66 respectively rotate fastest when cutting, and slower the rest of the time. A continuously acting brake brings the parts to rest after the clutch has been released.

Having thus described this invention, I hereby reserve the benefit of all changes in form, arrangement, order, or use of parts, as

it is evident that many minor changes may means for rotating the rolls in opposite directions and at the same rate of speed whereby the blades upon the rolls may overlap each other and the unobstructed surface areas of the rolls occur opposite each other at intervals, means for gradually increasing the rate of speed of rotation of the rolls as the ends of the blades approach each other and for rotating the rolls at a constant rate of speed during the period that the blades are overlapping each other and for gradually decreasing the rate of speed of rotation of the rolls as the ends of the blades leave each other.

In testimony whereof I hereunto afiix my signature.

WILLIAM MAIER. 

